Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
Pre-Closure Test

Plumbing Pressure-Test & Leak Checklist

Test every line and joint before the false ceiling and tiles close them up forever. 9 categories, 60+ checkpoints — from pressure test to flood test to handover.

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Pending

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Tested

Test Details

📋

Pre-Test Setup

Pipe layout drawing

As-built drawing available

Concealed vs exposed lines marked

Valves and shut-offs located on drawing

Test gauge and pump

Hydraulic test pump available

Calibrated pressure gauge (0–20 bar)

Gauge certificate dated within 12 months

Material BOQ verified

CPVC / PPR / UPVC as per spec

SWR pipes for drainage

All fittings match brand (Astral / Ashirvad / Supreme / Prince)

ISI marked

System isolation

Flat / system isolated from mains

All fixtures removed or plugged

Air release valves known and operable

💧

Water Supply Pressure Test

Cold water line pressure test

Fill system and vent air

Pressurise to 8–10 bar (CPVC)

Hold for minimum 2 hours

No pressure drop > 0.5 bar

No visible weep at joints

Hot water line pressure test

Separate test after cold line

CPVC hot line pressurised to 8 bar

Hold for 2 hours

Check insulation after test

Joint inspection

Every joint accessible visually inspected

Solvent cement joints fully set (24 hours before test)

No dry / partial joints

Concealed lines

Test done BEFORE wall tiling / covering

Any leak marks on ceiling below documented

Photographs of lines before closure kept on record

Pipe routing

No sharp bends

Support clips at max 600mm centres

Expansion loops where runs are long

No contact with electrical conduit

🚰

Drainage & SWR

Drain slope

1:40 minimum for soil pipes

1:80 for waste pipes

No reverse gradient

Measured with spirit level

Drain flow test

Pour 10 litres at every floor trap

Water drains within 60 seconds

No gurgling or slow drain

No back-flow

Air gap / trap water seal

Every trap has water seal

No siphonage (simultaneous flush test)

No sewer smell when not in use

Vent / stack pipe

Vent terminates above roof

No restrictions / cap present

Connected to waste stack correctly

Gully trap and inspection chamber

Gully trap accessible and clean

Chamber cover fits

No debris or silt accumulation

Kitchen grease trap

Installed if specified

Accessible for cleaning

No grease back-up

Drain to kitchen waste line (not storm water)

🛁

Bathroom Waterproofing & Flood Test

Surface prep

Slab level and cleaned

All pipe penetrations finished before WP coat

Corners and junctions chamfered

Waterproofing coat

Approved system applied (cementitious / PU / acrylic)

Two coats minimum

Extended up walls 300mm minimum

1800mm on shower walls

Fillet / coving at corners

Cement cove at floor-wall junction

No sharp 90° corners

Drain pipe neatly boxed

Flood / ponding test

Plug all outlets

Pond 50mm water depth

Hold for minimum 24 hours (48 recommended)

No drop > 5mm in 24 hours

No seepage on ceiling below (visual check after)

Test certificate

Written certificate signed by contractor

Photographs of test with date

Retained in O&M file

Slope to drain

1:80 slope toward trap

No ponding zones

Water empties fully after shower

🚿

Fixture Installation & Leaks

Faucets

No drip when closed

Flow rate normal

Aerator fitted

Hot/cold correctly connected

Showers

Rain and hand shower both working

Diverter holds position

No leak at wall connection

Arm and ceiling mount sealed

Basins

Drain connection tight

Pop-up waste working

No leak under basin

Silicone seal at wall

WC / concealed cistern

Flush volume correct (6/3 L dual flush)

No leak at inlet valve

No continuous trickle

Bolt seal at floor dry

Kitchen sink

Waste connection tight

Mixer tap no leak

Dishwasher / RO connections sealed

No drip in cabinet below

Angle valves / stop cocks

All working smoothly

Brand matches spec

No leak at valve gland

🔥

Hot Water System

Geyser installation

Wall anchors rated for weight

Level and plumb

Capacity matches demand

Brand matches spec

Connections

Safety valve installed

Temperature-pressure relief valve piped to drain

Stop-cock on inlet

Flexi / rigid connections per spec

Drip tray / overflow

Drip tray under geyser in false ceiling location

Overflow piped to drain

No dripping on ceiling below

Insulation

Hot lines insulated (min 10mm)

Joints wrapped

Cold water condensation accounted for

Solar water heater (if any)

Tilt and orientation correct

Anti-freeze mechanism for cold regions

Back-up electric element working

Temperature mixer before outlet

🪣

Water Tanks & Pumps

Overhead tank

Lid tight and rodent proof

Ventilation screen present

Overflow terminates safely

Inlet and outlet sized correctly

Sump / underground tank

No cracks — pressure test if done

Manhole sealed against surface run-off

Ventilation pipe above flood level

Booster pump

Auto-on when pressure drops

No leak at pump gland

Vibration isolation pads

Dry-run protection

Non-return valve

NRV at pump discharge

Functional — tested

Prevents back-flow to sump

Air cushion / pressure vessel

Installed where specified

Air pressure set correctly

Reduces pump cycling

🏠

External & Terrace Lines

Terrace plumbing test

All exposed lines UV-protected

Insulation for exposed hot lines

Support clips rated for outdoor

No sagging runs

Rainwater downpipes

Firmly fixed

No loose joints

Terminate above ground level

Discharge direction controlled

External taps

Frost-proof if hill station

Isolation valve indoors

Drain option in cold months

Irrigation / garden lines

Separate from potable supply

Back-flow prevention

Schedule controller working

📄

Documents & Handover

Test certificates

Pressure test report with gauge readings

Flood test certificate

Dated and signed by plumber

As-built drawings

Final plumbing layout with any variation

Digital + hard copy

Handed over to owner / society

Valve chart

Every isolation valve location and function documented

Labelled at valve

Emergency shut-off clearly marked

Warranty / AMC

Material warranty cards

Installer workmanship guarantee (minimum 1 year)

AMC vendor contacts

Leak log

Any leak observed post-test documented

Rectification photos saved

Retention deducted if unresolved

Download Pressure-Test PDF

Retain the flood-test and pressure-test certificates for life. The single biggest prevention of future ceiling leaks below.